<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <!-- 引入vue -->
  <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
  <div id="root">
    <h2>人员列表</h2>
    <input type="text" placeholder="请输入名字" v-model="keyWord">
    <button @click="upDateMei">更新马冬梅的信息</button>
    <ul>
      <li v-for="(p,index) of persons" :key="p.id">
        {{p.name}}-{{p.age}}-{{p.sex}}
        <input type="text">
      </li>
    </ul>
  </div>
  <script type="text/javascript">
    Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示。、
    new Vue({
      el: '#root',
      data: {
        persons: [
          { id: '001', name: '马冬梅', age: 19, sex: '女' },
          { id: '002', name: '周冬雨', age: 20, sex: '女' },
          { id: '003', name: '周杰伦', age: 21, sex: '男' },
          { id: '004', name: '温兆伦', age: 22, sex: '男' }
        ]
      },
      methods: {
        upDateMei() {
          // this.persons[0].name='马老师' //有效

          // this.persons[0]={id:'001',name:'马老师',age:50,sex:'男'}//不奏效

          this.persons.splice(0, 1, { id: '001', name: '马老师', age: 50, sex: '男' })
        }
      }
    })
  </script>
</body>

</html>